Python interview questions

Preview Questions

1. What are global, protected and private attributes in Python?

   1. Global (Public) Attributes: These are the simplest. They can be accessed from anywhere inside the class, from objects, or even outside the class. We just define them normally, like self.name = "Yatin". Since they are...

2. Explain *args and **kwargs in Python .

   In Python, *args and **kwargs are used when you want a function to accept a flexible number of arguments instead of a fixed number. They help make your functions more dynamic and reusable. *args (Positional Arguments):...

3. What are Decorators in python ?

   In Python, a decorator is a design pattern and a feature that allows you to modify functions and methods dynamically. This is done primarily to keep the code clean, maintainable, and DRY (Don’t Repeat Yourself). How...

4. What is the use of __name__ == ' __main__': ?

   It is used to control whether a piece of code should run or not when a file is executed. To understand this, you need to know that every Python file has a special built-in variable called __name__. When a Python file is...

5. What is list comprehension ? Give example

   In Python, list comprehension is a concise and clean way to create lists using a single line of code instead of writing a loop. It allows you to generate a new list by applying an expression to each item in an existing...

6. How do you Implement concurrency in Python ?

   In Python, concurrency means running multiple tasks at the same time to make programs faster or more efficient, especially when tasks are I/O-bound (like reading files, making network requests) or CPU-bound (heavy...

7. What strategies can be employees to optimize memory usage in python application ?

   In Python, memory optimization is important, especially for large applications or data-heavy programs, because inefficient memory usage can slow down your app or even cause crashes. Here are some common strategies to...

8. How does python support object oriented programming ?

   Python is a fully object-oriented programming (OOP) language, which means it allows you to model real-world entities using classes and objects. Everything in Python is essentially an object, including numbers, strings,...